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Description:

We demonstrate a surface lattice resonance (SLR)-based plasmonic nanolaser that leverages bulk production of colloidal nanoparticles and assembly on templates with single particle resolution. SLRs emerge from the hybridization of the plasmonic and photonic modes when nanoparticles are arranged into periodic arrays and this can provide feedback for stimulated emission. It has been shown that perfect arrays are not a strict prerequisite for producing lasing. Here, we propose using high-quality colloids instead. Silver colloidal nanocubes feature excellent plasmonic properties due to their single-crystal nature and low facet roughness. We use capillarity-assisted nanoparticle assembly to produce substrates featuring SLR and comprising single nanocubes. Combined with the laser dye pyrromethene-597, the nanocube array lases at 574 nm with <1.2 nm linewidth, <100 μJ cm−2 lasing threshold, and produces a beam with <1 mrad divergence, despite less-than-perfect arrangement. Such plasmonic nanolasers can be produced on a large-scale and integrated in point-of-care diagnostics, photonic integrated circuits, and optical communications applications.

Rights:

• cc-by-3.0
  

Keyword: Plasmon Laser, Nanoparticle, Self-assembly

Date published: 2024-10-22

Publisher: Royal Society of Chemistry (RSC)

Journal:

• Nanoscale Horizons (ISSN: 20556764) vol. 10 issue. 1 p. 142-149
• Nanoscale Horizons (ISSN: 20556764) p. 142-149

Funding:

• Sächsisches Staatsministerium für Wissenschaft und Kunst
• Narodowe Centrum Nauki UMO-2020/02/Y/ST5/00086
• Japan Society for the Promotion of Science 20K05453
• Lietuvos Mokslo Taryba S-M-ERA.NET-21-2

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.1039/d4nh00263f

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Updated at: 2025-04-20 17:34:21 +0900

Published on MDR: 2025-04-20 17:17:37 +0900